Rockwell Automation 5370-CVIM2 Module - Manual (Page 387)

5 Chapter Chapter 7
Inspection Tools
7–149
This section defines the components of the profile tool and, using a simple
example, illustrates the initial part of the profile tool setup process.
The four components of the profile tool are described briefly, as follows:
•
Profile window –– The profile window appears in red outline. It has the
same function as a window tool or image tool, in the sense that it defines
an “area of interest” (AOI), which is the portion of the image field that
the profile tool processes in order to produce the profile image.
•
Profile image –– The profile image is a single line of “pixels,” each of
which represents the average gray scale value of a column or row of
pixels in the profile window, according to the direction selection. (The
profile image does not appear on the screen.)
•
Profile display –– The profile display appears in green outline. It is a
graphic representation of the profile image.
(The profile image, if it were displayed, would appear as a single line of
gray scale pixels and would be difficult to use for inspection tool
measurements. Instead, the gray scale data in the profile image is
displayed graphically as the profile display.)
•
Threshold display –– The threshold display appears in yellow outline. It
is a graphic representation of a gray scale value ranging from 0 to 255.
The threshold display’s function is similar to the threshold of a gage tool,
in the sense that areas of the profile image “above” the threshold are
considered to be “foreground objects,” while areas “below” the threshold
are considered to be “background objects.” Points where the profile image
intersects the threshold are considered to be “edges.”
When you pick the button, the profile display and threshold display
components are turned off, and the profile window becomes visible (red) in
its entirety. The window can then be repositioned to an appropriate location
over the “pin connector” workpiece, as illustrated by the example in
Figure 7.120 (page 7–150).
When you exit the pick and place function, the profile tool processes the new
AOI, and the profile display (green) and threshold display (yellow) then
reappear, as shown in Figure 7.121 (page 7–150).
In general, the profile display depicts “contours” of the image within the
profile window; however, its appearance and orientation in each particular
case are functions of the selections in the
Direction , Filter 1 , and Filter 2
fields in the tool edit panel. These fields, along with the threshold and feature
buttons, are discussed in the remainder of the Profile Tool section.
Profile Tool: Components
and Initial Setup Process